Paroxysmal or tonic convulsions are a common pediatric emergency. It is due to multiple causes of neurological disorders of the brain. It is manifested by sudden generalized or localized tonic and clonic convulsions of the muscles, often accompanied by impaired consciousness. Pediatric poisoning can cause paroxysmal or tonic convulsions, and is often accompanied by coma, cyanosis, abnormal breathing and other symptoms, must be vigilant, timely diagnosis and treatment. It is often accompanied by upturning of both eyes, staring or squinting, and confusion. Sometimes it is accompanied by foaming at the mouth or tugging at the corners of the mouth, apnea, and cyanosis, and the seizure time is mostly within 3-5 minutes, sometimes repeatedly, or even in a continuous state. Pediatric poisoning is a common cause of paroxysmal or tonic convulsions, and the following diseases may also be the cause of paroxysmal or tonic convulsions: 1. Coramine poisoning Coramine and lobeline are widely used in pediatrics and can be caused by excessive doses or multiple consecutive injections of larger doses. The half lily, the mountain stalks and their seeds all contain lobeline, which can also cause poisoning when taken internally in excess. Chlorpromazine is a derivative of phenothiazine, and is commonly used for chlorpromazine (dormant), acetylpromazine, promethazine, fenpromazine, trifluoperazine, etc. Most of chlorpromazine poisoning is caused by overdose or children taking more than one dose by mistake. Occasionally, allergic reactions occur due to the application of therapeutic doses. 3. Gasoline poisoning Gasoline is a narcotic poison. Accidental consumption of kerosene or gasoline or inhalation of high concentration of kerosene or gasoline vapor can cause poisoning (keroseneor gaso1ine poisoning). Oral poisoning can have burning sensation in the mouth and throat, gastrointestinal symptoms, liver and kidney damage, and inhalation poisoning can have central nervous system dysfunction and respiratory system damage. 4, pediatric tic disorder Pediatric tic disorder, also known as habitual spasm syndrome, tic syndrome, transient tic disorder, etc., is a muscle tic disorder that occurs in childhood. The incidence is high, ranging from 1% to 7%, with some reports reaching 4% to 23%. It is mostly seen in children of preschool and early school age. There is a clear predominance of males, with a male to female ratio of 3:1 to 4:1. Most of the cases are benign, but there are also refractory patients.